Cart Type Bag

ABSTRACT

Disclosed is a cart type bag whose volume can be minimized when the cart type bag is carried or stored. The cart type bag is made of material that can be shrunk or restored depending on the volume of stored items, and comprises: a bottom side volume adjustment member that is arranged in the inner bottom side of the bag and comprises a pair of opposite base plates, which are foldable or unfoldable; a rest that is arranged in the outer bottom side of the bag and is fixed to one of the pair of base plates; a bag movement member that comprises a mount that is arranged in the outer bottom side of the bag and is fixed to the other of the pair of base plates and in which a mounting space is defined in the outer bottom side of the bag, and wheels that are respectively fixed to both lower edges of the mount; and a balancing means that balances the pair of base plates of the bottom side volume adjustment member such that the pair of base plates are not folded after the pair of base plates is unfolded.

TECHNICAL FIELD

The present invention relates to a cart type bag, and more particularly, to a cart type bag whose volume can be selectively minimized when the cart type bag is carried or stored.

BACKGROUND ART

In general, a cart type bag has a standardized external shape irrespective of the volume of stored items. Such a cart type bag includes wheels installed at the bottom side of the bag and a handle fixed on the top side of the bag for convenience of transport.

Although the car type bag has various merits in the respect of stability, since the cart type bag is standardized in its external shape, it has a big problem of increase of distribution cost in a distribution phase. In addition, it is inconvenient for a user to store the cart type bag because of its volume.

DISCLOSURE OF INVENTION Technical Problem

To overcome the above problems, it is an object of the present invention to provide a cart type bag whose volume can be minimized when the cart type bag is carried or stored, while keeping convenience of the cart type bag.

Technical Solution

To achieve the above object, the present invention provides a cart type bag, which is made of material that can be shrunk or restored depending on the volume of stored items, comprising: a bottom side volume adjustment member 100 that is arranged in the inner bottom side of the bag and comprises a pair of opposite base plates 110 and 120, which are foldable or unfoldable; a rest 200 that is arranged in the outer bottom side of the bag and is fixed to one 110 of the pair of base plates 110 and 120; a bag movement member 300 that comprises a mount 310 that is arranged in the outer bottom side of the bag and is fixed to the other 120 of the pair of base plates 110 and 120 and in which a mounting space 310 a is defined in the outer bottom side of the bag, and wheels 320 that are respectively fixed to both lower edges of the mount 310; and a balancing means that balances the pair of base plates 110 and 120 constituting the bottom side volume adjustment member 100 such that the pair of base plates 110 and 120 are not folded after the pair of base plates 110 and 120 is unfolded.

Preferably, the balancing means comprises: a fixing tube 412 that is arranged at the bottom side of the mount 310 in correspondence to at least one through hole 411 formed in an end side of the rest 200; and a balancing bar 413 inserted in the fixing tube 412 through the through hole 411.

Preferably, the balancing means comprises: a rotating balancing bar 421 rotatably attached to the bottom side of the rest 200; and an insertion member 422 that is provided at the bottom side of the mount 310 and has an insertion space 422 a in which the rotating balancing bar 321 is inserted.

Preferably, the balancing means comprises: a guiding part 432 that has one rail groove 431 formed in an inner side of the rest 200 and the other rail grove 432 a formed in the bottom side of the mount 310 and corresponding to the one rail groove 431; and a balancing plate 433 that is slid and inserted between the one rail groove 431 and the other rail groove 432 a.

Preferably, the balancing means comprises: a fixing part 435 that has a through space 434 formed in an inner side of the rest 200 and an insertion space 435 a formed in the bottom side of the mount 435 and corresponding to the through space 434; and a balancing plate 436 that passes the through space 434 and is forcedly inserted and fixed in the insertion space 435 a.

Preferably, the balancing means comprises: a fixing tube 461 that is provided at the bottom side of the rest 310 in correspondence to at least one through hole 460 formed at a side of the rest 200; a balancing bar 462 that is provided in correspondence to the through hole 461 and is inserted in the fixing tube 461 through the through hole 460, with an insertion space 463 formed in a side of the balancing bar 462; and a fixing means that comprises a blocking plate 464 that blocks an outer end of the balancing bar 462, a hooking plate 465 projecting from the blocking plate 464, and a hooking jaw 465 a formed below the hooking plate 465, wherein the fixing means is hooked and fixed on the rest 200 when the hooking jaw 465 a is inserted in the insertion space 463 of the balancing bar 462.

Preferably, the balancing means comprises: a fixing tube 467 that is provided at the bottom side of the rest 310 in correspondence to at least one through hole 466 formed at a side of the rest 200; and a balancing bar 468 that is provided in correspondence to the through hole 466 and is inserted in the fixing tube 467 through the through hole 466, the balancing bar 468 including a fixing rack comprising a hooking jaw 468 a that projects from a side of the balancing bar 468 and fixes the balancing bar 468 inserted in the fixing tube 467 through the through hole 466, wherein the hooking jaw 468 a is hooked and fixed on the rest 200 when the balancing bar 468 is inserted in the fixing tuber 467 through the through hole 466.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded perspective view illustrating a cart type bag according to a first embodiment of the present invention.

FIG. 2 is a combined perspective view illustrating the cart type bag according to the first embodiment of the present invention.

FIG. 3 is a perspective view showing a use condition of the cart type bag according to the first embodiment of the present invention.

FIG. 4 is a main part perspective view illustrating a fixed condition of a retractable handle fixed to the cart type bag according to the first embodiment of the present invention.

FIG. 5 is a main part perspective view illustrating a balancing means provided in a cart type bag according to a second embodiment of the present invention.

FIG. 6 is a main part perspective view illustrating a balancing means provided in a cart type bag according to a third embodiment of the present invention.

FIG. 7 is a main part perspective view illustrating a balancing means provided in a cart type bag according to a fourth embodiment of the present invention.

FIG. 8 is a main part perspective view illustrating a balancing means provided in a cart type bag according to a fifth embodiment of the present invention.

FIG. 9 is a main part perspective view illustrating a balancing means provided in a cart type bag according to a sixth embodiment of the present invention.

MODE FOR THE INVENTION

Hereinafter, a structure and operation of a cart type bag according to exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is an exploded perspective view illustrating a cart type bag according to a first embodiment of the present invention, FIG. 2 is a combined perspective view illustrating the cart type bag according to the first embodiment of the present invention, FIG. 3 is a perspective view showing a use condition of the cart type bag according to the first embodiment of the present invention, and FIG. 4 is a main part perspective view illustrating a fixed condition of a retractable handle fixed to the cart type bag according to the first embodiment of the present invention.

As shown in FIGS. 1 to 4, according to a first embodiment of the present invention, a cart type bag, which is made of material that can be shrunk or restored depending the volume of stored items, comprises: a bottom side volume adjustment member 100 that is arranged in the inner bottom side of the bag and comprises a pair of opposite base plates 110 and 120, which are foldable or unfoldable; a rest 200 that is arranged in the outer bottom side of the bag and is fixed to one 110 of the pair of base plates 110 and 120; a bag movement member 300 that comprises a mount 310 that is arranged in the outer bottom side of the bag and is fixed to the other 120 of the pair of base plates 110 and 120 and in which a mounting space 310 a having a shape corresponding to a bent external appearance of the outer bottom side of the bag is defined, and wheels 320 that are respectively fixed to both lower edges of the mount 310; and a balancing means that balances the pair of base plates 110 and 120 constituting the bottom side volume adjustment member 100 such that the pair of base plates 110 and 120 are not folded after the pair of base plates 110 and 120 is unfolded.

Preferably, material of the cart type bag is one selected from a group consisting of cloth, vinyl, leather and a combination thereof.

One side of the bag movement member 300 that a body of a user (for example, the back) touches is designed to have a shape that fits the body.

The bottom side volume adjustment member 100, the rest 200, and the mount 310 constituting the bag movement member 300, which are arranged with the bottom side therebetween, are interconnected and fixed by various fixing means such a rivet 10 or the like.

The bottom side volume adjustment member 100 may be configured in various ways. For example, the pair of base plates 110 and 120 constituting the bottom side volume adjustment member 100 may be integrally formed and a fold groove 130 may be formed along a boundary between the pair of integrally formed base plates 110 and 120.

Alternatively, the pair of base plates 110 and 120 constituting the bottom side volume adjustment member 100 may be separately formed, and interconnected and fixed by a hinge (not shown).

The balancing means comprises a fixing tube 412 that is arranged at the bottom side of the mount 310 in correspondence to at least one through hole 411 formed in an end side of the rest 200, and a balancing bar 413 inserted in the fixing tube 412 through the through hole 411.

Here, a hooking hole 412 is formed at one end of the fixing tube 412 and the balancing bar 413 is formed with a hooking jaw 413 a to be inserted in the hooking hole 412 a to prevent the balancing bar 413 inserted in the fixing tube 412 through the through hole 411 from being separated from the fixing tube 412.

When a user presses down the hooking jaw 413 a having its rear side and both sides cut, the balancing bar 413 is separated from the fixing tube 412.

The above-described balancing means provided in the cart type bag may be configured in various ways.

FIG. 5 is a main part perspective view illustrating a balancing means provided in a cart type bag according to a second embodiment of the present invention.

As shown in FIG. 5, the balancing means provided in the cart type bag according to the second embodiment of the present invention comprises a rotating balancing bar 421 rotatably attached to the bottom side of the rest 200 and an insertion member 422 that is provided at the bottom side of the mount 310 and has an insertion space 422 a in which the rotating balancing bar 321 is inserted.

Here, although not shown, the rotating balancing bar 421 may be configured in pair.

The rotating balancing bar 421 is forcedly inserted and tightly fixed in the insertion space 422 a of the insertion member 422.

FIG. 6 is a main part perspective view illustrating a balancing means provided in a cart type bag according to a third embodiment of the present invention.

As shown in FIG. 6, the balancing means provided in the cart type bag according to the third embodiment of the present invention comprises a guiding part 432 having one rail groove 431 formed in an inner side of the rest 200 and the other rail grove 432 a formed in the bottom side of the mount 310 and corresponding to the one rail groove 431, and a balancing plate 433 slid and inserted between the one rail groove 431 and the other rail groove 432 a.

FIG. 7 is a main part perspective view illustrating a balancing means provided in a cart type bag according to a fourth embodiment of the present invention.

As shown in FIG. 7, the balancing means provided in the cart type bag according to the fourth embodiment of the present invention comprises a fixing part 435 having a through space 434 formed in an inner side of the rest 200 and an insertion space 435 a formed in the bottom side of the mount 435 and corresponding to the through space 434, and a balancing plate 436 that passes the through space 434 and is forcedly inserted and fixed in the insertion space 435 a.

FIG. 8 is a main part perspective view illustrating a balancing means provided in a cart type bag according to a fifth embodiment of the present invention.

As shown in FIG. 8, the balancing means provided in the cart type bag according to the fifth embodiment of the present invention comprises a fixing tube 461 that is provided at the bottom side of the rest 310 in correspondence to at least one through hole 460 formed at a side of the rest 200, a balancing bar 462 that is provided in correspondence to the through hole 461 and is inserted in the fixing tube 461 through the through hole 460, with an insertion space 463 formed in a side of the balancing bar 462, and a fixing means that fixes the balancing bar 463 inserted in the fixing tube 461 through the through hole 460 and includes a blocking plate 464 that blocks an outer end of the balancing bar 462, a hooking plate 465 projecting from the blocking plate 464, and a hooking jaw 465 a formed below the hooking plate 465. When the hooking jaw 465 a is inserted in the insertion space 463 of the balancing bar 462, the fixing means is hooked and fixed on the rest 200.

In this case, the fixing means and the balancing bar 462 can be fixed together by inserting a fixing pin into a connecting hole formed in the hooking plate 465 and a connecting hole formed in the balancing bar 462.

In addition, the blocking plate 464 has an area larger than that of the through hole 460 such that an edge of the blocking plate 464 is stopped by the rest 200, thereby facilitating attachment/detachment of the balancing bar 462.

FIG. 9 is a main part perspective view illustrating a balancing means provided in a cart type bag according to a sixth embodiment of the present invention.

As shown in FIG. 9, the balancing means provided in the cart type bag according to the sixth embodiment of the present invention comprises a fixing tube 467 that is provided at the bottom side of the rest 310 in correspondence to at least one through hole 466 formed at a side of the rest 200, a balancing bar 468 that is provided in correspondence to the through hole 466 and is inserted in the fixing tube 467 through the through hole 466, and a fixing rack comprising a hooking jaw 468 a that projects from a side of the balancing bar 468 and fixes the balancing bar 468 inserted in the fixing tube 467 through the through hole 466, with a rear side and both sides of the hooking jaw 468 a cut. When the balancing bar 468 is inserted in the fixing tuber 467 through the through hole 466, the hooking jaw 468 a is hooked and fixed on the rest 200.

On the other hand, as shown in FIG. 4, the cart type bag further comprises a retractable handle 500 and a pair of fixing holes 311 that is formed on the mount 310 constituting the bag movement member 300 and in which both ends of the retractable handle 500 are inserted and fixed. The length of the retractable handle 500 can be adjusted, thereby allowing a user to carry the cart type bag conveniently. The adjustment of length of the retractable handle 500 is known in the art, and therefore, explanation thereof will be omitted for the sake of avoiding complexity of description.

In addition to the retractable handle 500, a fixed handle may be attached on the top side of the cart type bag.

As described above, the cart type bag of the present invention may be selectively applied to a trunk type bag for crumple prevention of stored items and convenient transport and a knapsack for convenient storage.

First, if the cart type bag is used as the trunk type bag, the pair of base plates 110 and 120 constituting the bottom side volume adjustment member 100 fixed on the inner bottom side of the cart type bag is balanced and fixed by the balancing means.

At this time, if the bottom side volume adjustment member 100 comprises the pair of base plates 110 and 120 integrally formed and having the fold groove 130 formed therein, the pair of base plates 110 and 120 becomes flat by unfolding the fold groove 130. On the other hand, if the bottom side volume adjustment member 100 comprises the pair of base plates 110 and 120 separately formed, and interconnected and fixed by the hinge (not shown), the pair of base plates 110 and 120 becomes flat by unfolding the hinge.

Here, as in the first embodiment, when the balancing means that balances the bottom side volume adjustment member 100 comprises the through hole 411 formed in the side of the rest 200, and the fixing tube 412 and the balancing bar 413 that are provided in the bottom side of the mount 310, the bottom side volume adjustment member 100 becomes flat by inserting the balancing bar 413 into the fixing tube 412 through the through hole 411. At this time, since the hooking jaw 413 a, which projects from the balancing bar 413, is hooked on the hooking hole 412 a, which is formed in the edge of the outer bottom side of the fixing tube 412, the balancing bar 413 is prevented from being separated from the fixing tube 412.

In addition, as in the second embodiment, when the balancing means that balances the bottom side volume adjustment member 100 comprises the rotating balancing bar 421, which is attached on the bottom side of the rest 200, and the insertion member 422, which is provided at the bottom side of the mount 310 and has the insertion space 422 a, the bottom side volume adjustment member 100 becomes flat by rotating and forcedly inserting the rotating balancing bar 421 into the insertion space 422 a of the insertion member 422.

In addition, as in the third embodiment, when the balancing means that balances the bottom side volume adjustment member 100 comprises the guiding part 432 having the one rail groove 431 formed in the inner side of the rest 200 and the other rail grove 432 a formed in the bottom side of the mount 310, and the balancing plate 433 slid and inserted between the one rail groove 431 and the other rail groove 432 a, the bottom side volume adjustment member 100 becomes flat by sliding and inserting the balancing plate 433 between the one rail groove 431 and the other rail groove 432 a.

On the other hand, the balancing means of the fourth embodiment has the same operation as the third embodiment except that the balancing plate 433 of the third embodiment is slid from the side while the balancing plate 436 is slid from the front.

In addition, as in the fifth embodiment, when the balancing means that balances the bottom side volume adjustment member 100 comprises the fixing tube 461 provided at the bottom side of the rest 310 in correspondence to the through hole 460 formed at the side of the rest 200, and the balancing bar 462, the bottom side volume adjustment member 100 becomes flat by inserting the balancing plate 462 into the fixing tube 461 through the through hole 460.

In this case, since the hooking jaw 465 a projecting from the side of the balancing bar 462 is hooked on the rest 200 and the edge of the blocking plate 464 attached to the outer side of the balancing bar 462 is stopped by the outer side of the rest 200 at which the through hole 460 is formed, the balancing bar 462 is prevented from being separated from the fixing tube 461.

On the other hand, the balancing means of the sixth embodiment has the same operation as the fifth embodiment, and therefore, description thereof will be omitted.

As described, when the cart type bag in which items (for example, clothes) are stored is carried, with the bottom side volume adjustment member 100 balanced, the stored items can be prevented from being crumpled since the cart type bag has a standardized space like the trunk type bag.

In addition, in the cart type bag, the retractable handle 500 is fixed on the top side of the bag movement member 300 and the wheels 320 are attached on the bottom side of the bag movement member 300. This allows a user to carry the cart type bag conveniently.

In addition, after detaching the retractable handle 500 from the cart type bag, a user can carry the cart type bag using the fixed handle attached on the top side of the cart type bag.

On the other hand, if the cart type bag is used as a knapsack which can be shrunk and restored, the balancing means that balances the bottom side volume adjustment member 100 is removed from the cart type bag.

In the case of the balancing means of the first embodiment in which the bottom side volume adjustment member 100 becomes flat by inserting the balancing bar 413 into the fixing tube 412 through the through hole 411, the balancing bar 413 is removed from the cart type bag. At this time, since the balancing bar 413 inserted in the fixing tube 412 is under the condition where the hooking jaw 413 a of the balancing bar 413 is inserted and fixed in the hooking hole 412 a, the balancing bar 413 must be removed with the hooking jaw 413 a pressed down.

In the case of the balancing means of the second embodiment in which the bottom side volume adjustment member 100 becomes flat by forcedly inserting the rotating balancing bar 421 into the insertion space 422 a of the insertion member 422, the balancing of the bottom side volume adjustment member 100 is released by rotating the forcedly inserted rotating balancing member 100.

In the case of the balancing means of the second embodiment in which the bottom side volume adjustment member 100 becomes flat by sliding and inserting the balancing plate 433 between the one rail groove 431 and the other rail groove 432 a, the balancing of the bottom side volume adjustment member 100 is released by removing the slid balancing plate 433.

In addition, the fixation of the balancing means according to other remaining embodiments is released or removed in a reverse order of the fixation procedure or in the same way as the above-described first to third embodiments, and therefore, description of which will be omitted.

As described above, when the cart type bag of the present invention is stored in a moving body (airplane, vehicle, train, ship, etc) in use under the condition where the balancing of the bottom side volume adjustment member 100 is removed, the volume of the cart type bag can be adjusted depending on the extent of stored items, which leads to good space availability.

Such good space availability causes increase of the number of cart type bags loaded in a container for export, which results in saving of the expenses of carriage.

INDUSTRIAL APPLICABILITY

As apparent from the above description, the present invention provides a cart type bag whose volume can be minimized when the cart type bag is carried or stored, while keeping convenience of the cart type bag.

In addition, the cart type bag of the present invention has an advantage in that it can selectively have a function of crumple prevention of stored items, a function of convenience of transport, and a function of convenience of storage. 

1. A cart type bag, which is made of material that can be shrunk or restored depending on the volume of stored items, comprising: a bottom side volume adjustment member 100 that is arranged in the inner bottom side of the bag and comprises a pair of opposite base plates 110 and 120, which are foldable or unfoldable; a rest 200 that is arranged in the outer bottom side of the bag and is fixed to one 110 of the pair of base plates 110 and 120; a bag movement member 300 that comprises a mount 310 that is arranged in the outer bottom side of the bag and is fixed to the other 120 of the pair of base plates 110 and 120 and in which a mounting space 310 a is defined in the outer bottom side of the bag, and wheels 320 that are respectively fixed to both lower edges of the mount 310; and a balancing means that balances the pair of base plates 110 and 120 constituting the bottom side volume adjustment member 100 such that the pair of base plates 110 and 120 are not folded after the pair of base plates 110 and 120 is unfolded.
 2. The cart type bag according to claim 1, wherein the pair of base plates 110 and 120 of the bottom side volume adjustment member 100 is integrally formed and a fold groove 130 is formed along a boundary between the pair of integrally formed base plates 110 and
 120. 3. The cart type bag according to claim 1, wherein the pair of base plates 110 and 120 of the bottom side volume adjustment member 100 is separately formed, and interconnected and fixed by a hinge.
 4. The cart type bag according to claim 1, wherein the balancing means comprises: a fixing tube 412 that is arranged at the bottom side of the mount 310 in correspondence to at least one through hole 411 formed in an end side of the rest 200; and a balancing bar 413 inserted in the fixing tube 412 through the through hole
 411. 5. The cart type bag according to claim 1, wherein the balancing means comprises: a rotating balancing bar 421 rotatably attached to the bottom side of the rest 200; and an insertion member 422 that is provided at the bottom side of the mount 310 and has an insertion space 422 a in which the rotating balancing bar 321 is inserted.
 6. The cart type bag according to claim 1, wherein the balancing means comprises: a guiding part 432 that has one rail groove 431 formed in an inner side of the rest 200 and the other rail grove 432 a formed in the bottom side of the mount 310 and corresponding to the one rail groove 431; and a balancing plate 433 that is slid and inserted between the one rail groove 431 and the other rail groove 432 a.
 7. The cart type bag according to claim 1, wherein the balancing means comprises: a fixing part 435 that has a through space 434 formed in an inner side of the rest 200 and an insertion space 435 a formed in the bottom side of the mount 435 and corresponding to the through space 434; and a balancing plate 436 that passes the through space 434 and is forcedly inserted and fixed in the insertion space 435 a.
 8. The cart type bag according to claim 1, wherein the balancing means comprises: a fixing tube 461 that is provided at the bottom side of the rest 310 in correspondence to at least one through hole 460 formed at a side of the rest 200; a balancing bar 462 that is provided in correspondence to the through hole 461 and is inserted in the fixing tube 461 through the through hole 460, with an insertion space 463 formed in a side of the balancing bar 462; and a fixing means that comprises a blocking plate 464 that blocks an outer end of the balancing bar 462, a hooking plate 465 projecting from the blocking plate 464, and a hooking jaw 465 a formed below the hooking plate 465, wherein the fixing means is hooked and fixed on the rest 200 when the hooking jaw 465 a is inserted in the insertion space 463 of the balancing bar
 462. 9. The cart type bag according to claim 1, wherein the balancing means comprises: a fixing tube 467 that is provided at the bottom side of the rest 310 in correspondence to at least one through hole 466 formed at a side of the rest 200; and a balancing bar 468 that is provided in correspondence to the through hole 466 and is inserted in the fixing tube 467 through the through hole 466, the balancing bar 468 including a fixing rack comprising a hooking jaw 468 a that projects from a side of the balancing bar 468 and fixes the balancing bar 468 inserted in the fixing tube 467 through the through hole 466, wherein the hooking jaw 468 a is hooked and fixed on the rest 200 when the balancing bar 468 is inserted in the fixing tuber 467 through the through hole
 466. 10. The cart type bag according to claim 1, further comprising a retractable handle 500 whose length can be adjusted, and a pair of fixing holes 311 that is formed on the mount 310 of the bag movement member 300, the retractable handle 500 being inserted and fixed in the pair of fixing holes
 311. 